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How to Use the Popular Science Library; History of Science; General Index ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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1,228,378 braille cells · 1,293 embossed pages at 40×25 · 3,762 unrepresentable characters omitted

⠠⠎⠞⠗⠥⠉⠞⠥⠗⠑⠀⠕⠋⠀⠠⠗⠕⠉⠅⠎⠀⠁⠝⠙⠀⠕⠋⠀⠠⠍⠊⠝⠑⠗⠁⠇⠀⠁⠝⠙
⠀⠀⠀⠀⠀⠀⠠⠍⠑⠞⠁⠇⠇⠊⠉⠀⠎⠥⠃⠎⠞⠁⠝⠉⠑⠎⠆⠀
⠠⠧⠥⠇⠉⠁⠝⠕⠇⠕⠛⠽⠂⠀⠞⠓⠑⠀⠠⠎⠉⠊⠑⠝⠉⠑⠀⠕⠋⠀
⠠⠧⠕⠇⠉⠁⠝⠕⠑⠎⠂⠀⠁⠝⠙⠀⠀⠀⠀⠀⠀⠕⠋⠀⠑⠁⠗⠞⠓⠀
⠙⠊⠎⠞⠥⠗⠃⠁⠝⠉⠑⠎⠀⠊⠝⠀⠛⠑⠝⠑⠗⠁⠇⠆⠀⠁⠝⠙⠀⠞⠓⠑⠀
⠠⠎⠉⠊⠑⠝⠉⠑⠀⠕⠋⠀⠠⠍⠊⠝⠊⠝⠛⠂⠀⠀⠀⠀⠀⠀⠺⠓⠊⠉⠓⠀⠓⠁⠎⠀
⠎⠑⠧⠑⠗⠁⠇⠀⠃⠗⠁⠝⠉⠓⠑⠎⠂⠀⠁⠝⠙⠀⠋⠕⠗⠍⠎⠀⠞⠓⠑⠀⠃⠁⠎⠊⠎⠀⠕⠋
⠀⠑⠝⠕⠗⠍⠕⠥⠎⠀⠀⠀⠀⠀⠀⠊⠝⠙⠥⠎⠞⠗⠊⠁⠇⠀⠙⠑⠧⠑⠇⠕⠏⠍⠑⠝⠞⠎⠲⠀
⠠⠊⠞⠀⠊⠎⠀⠍⠁⠝⠊⠋⠑⠎⠞⠂⠀⠁⠎⠀⠃⠑⠋⠕⠗⠑⠀⠎⠁⠊⠙⠂⠀⠞⠓⠁⠞⠀
⠞⠓⠑⠀⠗⠑⠁⠙⠑⠗⠀⠍⠥⠎⠞⠀⠃⠑⠀⠓⠊⠎⠀⠕⠺⠝⠀⠃⠑⠎⠞⠀⠀⠚⠥⠙⠛⠑⠀
⠁⠎⠀⠞⠕⠀⠞⠓⠑⠀⠏⠗⠑⠉⠊⠎⠑⠀⠕⠗⠙⠑⠗⠀⠊⠝⠀⠺⠓⠊⠉⠓⠀⠞⠕⠀⠞⠁⠅⠑
⠀⠥⠏⠀⠞⠓⠑⠀⠏⠑⠗⠥⠎⠁⠇⠀⠕⠋⠀⠀⠞⠓⠑⠀⠧⠕⠇⠥⠍⠑⠎⠀⠊⠝⠀⠺⠓⠊⠉⠓
⠀⠞⠓⠊⠎⠀⠊⠍⠍⠑⠝⠎⠑⠀⠍⠁⠎⠎⠀⠕⠋⠀⠎⠉⠊⠑⠝⠞⠊⠋⠊⠉⠀
⠅⠝⠕⠺⠇⠑⠙⠛⠑⠀⠊⠎⠀⠀⠏⠗⠑⠎⠑⠝⠞⠑⠙⠲⠀⠠⠃⠥⠞⠂⠀⠺⠓⠑⠗⠑⠀
⠞⠓⠑⠗⠑⠀⠊⠎⠀⠝⠕⠀⠏⠗⠑⠙⠊⠎⠏⠕⠎⠊⠞⠊⠕⠝⠀⠞⠕⠀⠉⠓⠕⠕⠎⠑⠀⠕⠝⠑
⠀⠎⠥⠃⠚⠑⠉⠞⠀⠀⠗⠁⠞⠓⠑⠗⠀⠞⠓⠁⠝⠀⠁⠝⠕⠞⠓⠑⠗⠂⠀⠕⠗⠀⠺⠓⠑⠗⠑⠀
⠞⠓⠑⠗⠑⠀⠊⠎⠀⠁⠀⠙⠑⠎⠊⠗⠑⠀⠞⠕⠀⠋⠕⠇⠇⠕⠺⠂⠀⠁⠎⠀⠝⠑⠁⠗⠇⠽⠀
⠁⠎⠀⠀⠍⠁⠽⠀⠃⠑⠂⠀⠞⠓⠑⠀⠝⠁⠞⠥⠗⠁⠇⠀⠇⠊⠝⠑⠀⠕⠋⠀
⠙⠑⠧⠑⠇⠕⠏⠍⠑⠝⠞⠀⠕⠋⠀⠓⠥⠍⠁⠝⠀⠅⠝⠕⠺⠇⠑⠙⠛⠑⠂⠀⠊⠞⠀⠺⠕⠥⠇⠙
⠀⠀⠃⠑⠀⠺⠑⠇⠇⠀⠞⠕⠀⠞⠁⠅⠑⠀⠋⠊⠗⠎⠞⠂⠀⠁⠋⠞⠑⠗⠀⠞⠓⠑⠀
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⠎⠉⠊⠑⠝⠉⠑⠀⠞⠓⠁⠞⠀⠋⠗⠕⠍⠀⠞⠓⠑⠀⠃⠑⠛⠊⠝⠝⠊⠝⠛⠀⠓⠁⠎⠀⠓⠁⠙⠀
⠁⠀⠏⠑⠉⠥⠇⠊⠁⠗⠀⠏⠕⠺⠑⠗⠀⠞⠕⠀⠁⠺⠁⠅⠑⠝⠀⠀⠊⠝⠞⠑⠇⠇⠑⠉⠞⠥⠁⠇
⠀⠉⠥⠗⠊⠕⠎⠊⠞⠽⠆⠀⠞⠓⠑⠝⠀⠞⠓⠁⠞⠀⠕⠝⠀⠁⠝⠞⠓⠗⠕⠏⠕⠇⠕⠛⠽⠆⠀
⠞⠓⠑⠝⠀⠞⠓⠑⠀⠧⠁⠗⠊⠕⠥⠎⠀⠀⠎⠕⠤⠉⠁⠇⠇⠑⠙⠀⠝⠁⠞⠥⠗⠁⠇⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.